Ink cartridge



FIG. 1 is a perspective view of an ink cartridge;

FIG. 2 is a front view thereof;

FIG. 3 is a top view thereof;

FIG. 4 is a right side view thereof;

FIG. 5 is a left side view thereof;

FIG. 6 is a rear view thereof;

FIG. 7 is a bottom view thereof; and,

FIG. 8 is an enlarged partial cross-sectional view thereof taken along the line 8—8 of FIG. 4.

The broken lines are for illustrative purposes only and form no part of the claimed design. 

The ornamental design for an ink cartridge, as shown and described. 